Generally, a download manager enables downloading of large files or multiples files in one session.Many web browsers, such as Internet Explorer 9, include a download manager.Stand-alone download managers also are available, including the Microsoft Download Manager.

if you do not have a download manager installed, and still want to download the file(s) you've chosen, please note:

You may not be able to download multiple files at the same time.In this case, you will have to download the files individually.(You would have the opportunity to download individual files on the "Thank you for downloading" page after completing your download.)

Files larger than 1 GB may take much longer to download and might not download correctly.

You might not be able to pause the active downloads or resume downloads that have failed.

The Microsoft Download Manager solves these potential problems.It gives you the ability to download multiple files at one time and download large files quickly and reliably.It also allows you to suspend active downloads and resume downloads that have failed.

Windows 7 and Windows Server 2008 R2 SP1 helps keep your PCs and servers on the latest support level. It also provides ongoing improvements to the Windows Operating System (OS), by including previous updates delivered over Windows Update as well as continuing incremental updates to the Windows 7 and Windows Server 2008 R2 platforms based on customer and partner feedback. This enables organizations to deploy a single set of updates.

Windows 7 and Windows Server 2008 R2 SP1 will help you:

Keep your PCs supported and up-to-date

Get ongoing updates to the Windows 7 platform

Easily deploy cumulative updates at a single time

Meet your users' demands for greater business mobility

Provide a comprehensive set of virtualization innovations

Provide an easier Service Pack deployment model for better IT efficiency

Steps to take before installing Windows 7 Service Pack 1 from the Microsoft Download Center
If you choose to install Windows 7 SP1 from the Microsoft Download Center Web site, there are steps that you can take to make sure that you have a good experience when you install the service pack. This article, KB 2505743, provides some suggestions to improve your experience when you install Windows 7 SP1 from the Microsoft Download Center Web site.

In order to download and install Windows 7 and Windows Server 2008 R2 SP1 you must currently have a Release to Manufacturing (RTM) version of Windows 7 or Windows Server 2008 R2 already installed.

If you have previously installed a pre-release version of Windows 7 and Windows Server 2008 R2 SP1 on your machine, you must uninstall that version before installing SP1.

Windows 7 and Windows Server 2008 R2 SP1 is available for installation in the same languages made available at original launch of Windows 7 and Windows Server 2008 R2.

This tool checks your computer for infection by specific, prevalent malicious software (including Blaster, Sasser, and Mydoom) and helps to remove the infection if it is found. Microsoft will release an updated version of this tool on the second Tuesday of each month.

Download and run the Windows 7 Upgrade Advisor to see if your PC is ready for Windows 7. It scans your hardware, devices, and installed programs for known compatibility issues, gives you guidance on how to resolve potential issues found, and recommends what to do before you upgrade.